it's not you. seems there is something going on with US buyers.
https://www.reddit.com/r/RPGMaker/comments/1tx1e25/itch_buying_issues/?utm_sourc...
Viewing post in Kadajah's Battle Transitions for RPG Maker MZ comments
Can you add me on Discord, please? I think I have an alternative.
https://discord.gg/FsAVFW6Y5